The first alpha of the Wily Werewolf (to become 15.10) has now been released! This alpha features images for Kubuntu, Lubuntu, Ubuntu MATE, UbuntuKylin and the Ubuntu Cloud images. Pre-releases of the Wily Werewolf are not encouraged for anyone needing a stable system or anyone who is not comfortable running into occasional, even frequent breakage. They are, however, recommended for Ubuntu flavor developers and those who want to help in testing, reporting and fixing bugs as we work towards getting this release ready. Alpha 1 includes a number of software updates that are ready for wider testing. This is quite an early set of images, so you should expect some bugs.

Alpha 3 includes the 3.0.0-7.9 Ubuntu kernel which is based on the mainline v3.0 kernel. This is an update from the 3.0-3.4 Ubuntu kernel which shipped in the Alpha 2 release and was based on the mainline v3.0-rc5 kernel. Some of the most notable changes between the Alpha 2 and Alpha 3 release with respect to the kernel include:

The Ubuntu team is pleased to announce the release of Ubuntu 11.04 beta. Codenamed "Natty Narwhal", 11.04 continues Ubuntu's proud tradition of integrating the latest and greatest open source technologies into a high-quality, easy-to-use Linux distribution.

The Ubuntu team is proud to announce the release of Ubuntu 10.04.2 LTS, the second maintenance update to Ubuntu's 10.04 LTS release. This release includes updated server, desktop, alternate installation CDs and DVDs for the i386 and amd64 architectures.

Alpha 2 is the second in a series of milestone CD images that will be released throughout the Natty development cycle. New packages showing up for the first time include: * LibreOffice 3.3 (has replaced OpenOffice.org 3.2) * X.org Server 1.10 and Mesa 7.10 * LinuxKernel 2.6.38-rc2.

"Unity is now the default in the Ubuntu desktop session. The Unity Launcher is now available; it can be used to launch applications that are pinned to the launcher and switch between running applications. It supports quick lists on context menu. It can be set to auto-hide. Places is not yet available in alpha 1. Clicking the Ubuntu logo in the upper left of the screen will open the applications directory."